Flour-sifter



PATENT OEEIcE.

L. W. TURNER, OF MERIDEN, CONNECTICUT.

FLOUR-SIFTER.

Specification formingpart of Letters Patent No. 50,054, dated September 19, 1865.

To all whom it may concern:

Be it known that I, LEwIs W. TURNER, of the town of Meriden, in the county of New Haven and State of Connecticut, have invented a new and useful Improvement in Flour- Sifters, as a new article of manufacture; and I do hereby declare that the following is a full, clear, and exact description of the construction, character, and operation of the same, reference being had to the accompanyingdrawings,which make part of this specication, iu which- Figure l is a perspective view of the sitter ready for use. Fig. 2 is a section of the same cut vertically through the center, showing the relative positions of the several parts. Fig. 3 is a section of the same cut horizontally through the steps or cross-trees on which the conical frame rests and revolves. Fig. 4 is a perspective of the conical frame, showing the crank, spiral blades, brush, 811e.

My improvement consists in fitting a conical frame composed of a series of spirally-formed blades attached to a central socket or tube, the whole to be revolved by a horizontal crank, within a hollow cone or frustum ot' a cone composed principally ot' wire cloth or gauze sustained in a proper cylinder or box, and in using one or more brushes for the full length or extent ot' the wire-cloth to brush it clean and keep the meshes open.

I make the outside case of sheet metal, or of any other suitable material, of a cylindrical shape, as shown at A, Fig. 1, and indicated in vertical section at A A, Fig. 2, orof' any other suitable or convenient shape. Near the lower end of this case I tit a proper step or support for the revolving frame to rest on, composed of three arms, b, c, and d, connected in the center, as shown in horizontal section in Fig. 3, and indicated in vertical section at b and d, Fig. 2, or in any other convenient i'orm; and in the center of this step I secure the lower end of an upright or spindle, as shown at a, Fig. 2, on which the socket or tube e slips and revolves to sustain the conical frame, Fig. 4 as shown in Figs. l and 2.

I make the sieve E of wire-cloth of the suitable tineness of meshes in the form of a frustuin of a cone, and I secure the base or larger end to the Haring top B of the case, and the small end to the step or support C, all as represented in section in Fig. 2 and as shown in part in Fig. l.

I make the conical trarne of three or more blades, as g, l1', and i, Fig. 4, and lit them to the tube ein aspiral form, as shown in Figs. 4 and 2 and indicated in Fig. l; and I support the upper ends by arms, as shown at 7c l m, Figs. 4 and l, and k l, Fig. 2, and of a size and shape suited to the conical sieve E, as indicated in Figs. 2 and l; and in one or more of these spiral blades for the whole length I iit bristles or iIne wire in a suitable manner to form a brush, as represented at g, Figs. l, 2, and 4, so that in its revolutions it will continuaily brush the whole of the surface of the sieve E clean and keep all of the meshes open and free.

For use I pass the socket e onto the upright a, and turn on the nut n, as represented in Fig. 2, when the whole will appear as shown in Fig. l. I then pour the Hour into the top and revolve the crank D in the direction indicated by the dart, when the spiral blades It i will loosen the flour and crush the lumps, while the brush g will keep the surface free from any adhesive substance and keep the meshes ot' the sieve open, so as to allow the iiour to pass freely; and to remove the refuse I take oit the nut n, remove the spiral frame, Fig. 4, and empty the sieve.

What I claim as my invention, and desire to secure by Letters Patent, is-

As a new article of manufacture, a tloursifter composed of a suitable case, a conical sieve, and a revolving frame, when the frame is composed of spirally-litted blades and a brush or brushes, and the whole is fitted for use substantially as herein described.

L. W. TURNER. 

